Use the RESET command to reset the probe. Upon reset or power-up, the probe enters the serial mode that has been set with the SMODE command.
RESET<cr>
Example (probe set to serial mode STOP, will output probe model and software version at reset):
reset
HMP60 / 1.00.0
Example (probe set to serial mode RUN, will start to output measurement messages at reset):
reset
T= 23.6 'C RH= 20.2 %RH Td= -0.5 'C
T= 23.6 'C RH= 20.2 %RH Td= -0.5 'C
T= 23.3 'C RH= 20.2 %RH Td= -0.8 'C
...